caa a22 4500 60551402X CHVBK 20210128100702.0 cr unu---uuuuu 210128e20150801xx s 000 0 eng 10.1007/s00360-015-0911-y doi (NATIONALLICENCE)springer-10.1007/s00360-015-0911-y Validating the relationship between 3-dimensional body acceleration and oxygen consumption in trained Steller sea lions [Elektronische Daten] [Beth Volpov, David Rosen, Andrew Trites, John Arnould] We tested the ability of overall dynamic body acceleration (ODBA) to predict the rate of oxygen consumption ( $$s\dot{V}_{{{\text{O}}_{2} }}$$ s V ˙ O 2 ) in freely diving Steller sea lions (Eumetopias jubatus) while resting at the surface and diving. The trained sea lions executed three dive types—single dives, bouts of multiple long dives with 4-6 dives per bout, or bouts of multiple short dives with 10-12 dives per bout—to depths of 40m, resulting in a range of activity and oxygen consumption levels. Average metabolic rate (AMR) over the dive cycle or dive bout calculated was calculated from $$s\dot{V}_{{{\text{O}}_{2} }}$$ s V ˙ O 2 . We found that ODBA could statistically predict AMR when data from all dive types were combined, but that dive type was a significant model factor. However, there were no significant linear relationships between AMR and ODBA when data for each dive type were analyzed separately. The potential relationships between AMR and ODBA were not improved by including dive duration, food consumed, proportion of dive cycle spent submerged, or number of dives per bout. It is not clear whether the lack of predictive power within dive type was due to low statistical power, or whether it reflected a true absence of a relationship between ODBA and AMR. The average percent error for predicting AMR from ODBA was 7-11%, and standard error of the estimated AMR was 5-32%. Overall, the extensive range of dive behaviors and physiological conditions we tested indicated that ODBA was not suitable for estimating AMR in the field due to considerable error and the inconclusive effects of dive type. Springer-Verlag Berlin Heidelberg, 2015 Steller sea lion nationallicence Oxygen consumption nationallicence Overall dynamic body acceleration nationallicence Activity nationallicence Oxygen depletion nationallicence Diving physiology nationallicence Mb : Body mass (kg) nationallicence ODBA : Overall dynamic body acceleration averaged over dive cycle or dive bout (g, 1g=9.81ms2) nationallicence $$V_{{{\text{O}}_{2} }}$$ V O 2 : Total oxygen consumption nationallicence $$\dot{V}_{{{\text{O}}_{2} }}$$ V ˙ O 2 : Whole animal rate of oxygen consumption rate (ml O2 min−1) nationallicence $$s\dot{V}_{{{\text{O}}_{2} }}$$ s V ˙ O 2 : Mass-corrected rate of oxygen consumption rate (ml O2 min−1kg−0.75) nationallicence MRs : Surface metabolic rate ~2min prior to diving (ml O2 min−1kg−0.75) nationallicence AMR : Average metabolic rate over dive cycle or dive bout calculated from $$s\dot{V}_{{{\text{O}}_{2} }}$$ s V ˙ O 2 (ml O2 min−1kg−0.75) nationallicence DLW : Doubly labeled water nationallicence cADL : Calculated aerobic dive limit nationallicence Dive cycle : Single dive+1 surface interval until $$s\dot{V}_{{{\text{O}}_{2} }}$$ s V ˙ O 2 within 5% of pre-dive MRs nationallicence Dive bout : Series of dives+surface intervals until final $$s\dot{V}_{{{\text{O}}_{2} }}$$ s V ˙ O 2 within 5% of pre-dive MRs. Surface intervals within a dive bout do not return to within 5% of MRs nationallicence Bout of short dives : 10 or 12 dives per dive bout nationallicence goal of 1-2min per dive nationallicence Bout of long dives : 4-6 dives per dive bout nationallicence goal of 4-6min per dive nationallicence Single dives : 1 dive cycle with a dive duration goal of 4-6min nationallicence Volpov Beth School of Life and Environmental Sciences, Deakin University, 3125, Burwood, VIC, Australia aut Rosen David Marine Mammal Research Unit, Fisheries Centre, University of British Columbia, Vancouver, BC, Canada aut Trites Andrew Marine Mammal Research Unit, Fisheries Centre, University of British Columbia, Vancouver, BC, Canada aut Arnould John School of Life and Environmental Sciences, Deakin University, 3125, Burwood, VIC, Australia aut Journal of Comparative Physiology B Springer Berlin Heidelberg 185/6(2015-08-01), 695-708 0174-1578 185:6<695 2015 185 360 https://doi.org/10.1007/s00360-015-0911-y text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00360-015-0911-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Volpov Beth School of Life and Environmental Sciences, Deakin University, 3125, Burwood, VIC, Australia aut NATIONALLICENCE 700 1- Rosen David Marine Mammal Research Unit, Fisheries Centre, University of British Columbia, Vancouver, BC, Canada aut NATIONALLICENCE 700 1- Trites Andrew Marine Mammal Research Unit, Fisheries Centre, University of British Columbia, Vancouver, BC, Canada aut NATIONALLICENCE 700 1- Arnould John School of Life and Environmental Sciences, Deakin University, 3125, Burwood, VIC, Australia aut NATIONALLICENCE 773 0- Journal of Comparative Physiology B Springer Berlin Heidelberg 185/6(2015-08-01), 695-708 0174-1578 185:6<695 2015 185 360